Electrical razor



Feb. A3, 1.942,. J. D. ALTEMus ELECTRICAL' RAZOR v5 sheets-sheet 2 Filed March 51, 1958 7460 ATTONEY.

Patented Feb. 3, 1942 faz'zanss nnnc'rmoannazon n n James Dobson Aitemus,4 Rouyn, N. Y, y Application nach 31e, 193s, fsferiau No. v199,108

- .s (ci. en -43) .This invention relates toy electric shaving imf plements of the true razor type, as vcontra-dis` tinguished from the clipper type, and has fory its particular objectsv the provision of an im`l plement of thatcharacter in which the moyable blade member or'. cutter bar and the comperating stationary blades on the shearingv head are so disposed that the shearing edges 'of these Vmembers are exposed so as to have substantiallyg," flush engagement with the skin during the shaving operation while only the lhairs which it isidesired to cut'are permitted to project through the" guard or comb, thus effectively-protecting' the yskin at al1 times against laceration or "injury:

Other objects of the invention are the provision of an implementwhich'is'sturdy, compact, at-

tractive in appearance and in vwhich the shearing renewable, are capable of llong servicewithout requiring theirresharpening, besidesy the otherl advantages hereinafter fsetforth.

In .the accompanying drawings, inwhich i have?. illustrated preferred forms of my 'inventionzj y ,4 Figure 1 is a perspective yView iof an' electricall razor embodying' my invention; 4

Fig.v 2 is a perspective view of the` oscillating-vl blade homer,` isolated;

blade element, isolated;5

Fig- 3 isa. perspective view of the movableA Fig. 6 is a fragmentary vertical section ofthe razor shown in Fig. 1; l Fig. 'l'is a vertical section on line 1,--1 of Fig. 6

but with the crank moved forward 90 to bring n y A v Vshaving head. Each of`said cheek .pieces hasn the blade to a central position;

Figs.` 8. and 9` are fragmentary end elevations., with the'housing partially broken away, of two different modifications; and

' Fig. 10 is a fragmentaryplan view and Fig. 11-

a fragmentary vvertical section, 'ofthe vshaving head, showing a modiilcatlonwherein certain of 45,

the slots of the comb 'Hand the cutter teeth whichA Fig. iis a'perspective view, of the stationary .30 guard, or comb member, isolated; Y l

Fig. 5 is a perspectiveyiewof the separatorl I or pan for collecting the cut hairs;

n centrally mcundjon nhe'pper endjdf the 'shaft 2 andmoves therewith?-l Y In the top of the yhousingis mounted a shaving heady l5,k the same including an oscillatablefblade holder or4 frame .6 `which is mounted ,cna longi-l tudin'al axle 'I Lthat is secured at its opposite ends in said head1. Said blade'holderhas a.l rectangular"slot 8 formedtherein which receives l'said vcrank: pin and co-operatestherewithfin the well known manner. to'enect oscillation of its blade holder-.upon rotation of the shaft` 2.` A

channeled'pan' 9 which serves as a receptacle for r Esevered'h'airs entering into theishaving head and alsoas va guard to preventy the same fouling'- the v motor mechanismpis mounteddirectly below the bladewholderi. A cutter bar IIwhich, as shown,

has separatedcutting elementsor-teeth I2, .is

vedges of the cutting. elements while being easily f Vab' ",rigidlyandgvobliquely secured byscrews II' andvr II! in said bladeholder, ,the same being adapted ktopos cillatetherewith.`r` Anjarcuate comby or guard c member I3 is'rigidlyxounted onjthe shaving v head,f`the'combhavingparallel lspaced arcuate lingers IIwith-parallel slotsl Ii formed therebetween, each of which isof'a v,width to :snugly Y receive a different tooth oi'- thelcutter :barwhile' admitting'of.; the free oscillation of the teeth in saidl slots." lfPrefe'rably` an arcuate reinforcing l center'bar I6 is formed on said "comb and the oscillate therein are enlarged for the bettern-re'-` A ception andshearingof longl hairs. y u Referring to the drawings and the construction shown therein, 'y the reference numeral' I designates a housing, which also vserves as a cutter bar has `acorresponding slot I1 formed 'v 'therein to snugly receive said bar I6 while ad-y mitting of the free oscillation Yof, the., cutter bar 1 withrespect'to said comb. kCheek pieces I8 are {pivotally'secured to the opposite sides of,v the shaving head,v the same being mountedon pintles g I9.' each of which extends through the endplates"y of said head and also throughkforksizll and'ZI respectively carried by saidcheek pieces and the blade member!! removably secured; thereto by screws 23," said blade ymember-s1 having .their op-v f posing edges 24` sharpened .toa knife edgeioriy co-operation with'the teeth zof saidfoscillatoryt cutterbaal'l 3, y 1 -Regulating screws 25 serve tomaintain' the` knife edges 24 in intimate engagement with the outer surface of thefingers of the comb Il.

stationary comb I3, preferably'by screwsv nine serted frombelow. 'Ifhis'central b ar reduces the which is housed `an electr-ic`v` motor (not shown). Said motor serves vto rotate the maingshafta! in the direction indicated by the arrow in Fig; v6.

A disk 3, having an eccentric crank pin I, is Il exposed area of the comb and also tends to mini- I mize vibration of the comb in those cases where Vthe spacing between the cheek pieces is relatively great, such-as inthis latter form of razor. j

tain the cheek' pieces in elastic engagement with the comb Il, and when it is desired to brush out ,the accumulated hairs from the comb, 'these cheek pieces are adapted to be raised to the position shown at the right side of Fig. 8 by manually applying pressure to the lower end thereof.

In the modification illustrated in F18. 9, the cheek pieces I0 and theblade members 4I carried thereby are so disposed as to leave but a relatively narrow area of the comb exposed and consequently the interposition of a stationary cutter bar, such as the bar of the construction shown in Figs. 1, 6, 'l and 8, may be dispensed with. In such a construction, however, the shearing of the hairs will occur vonly along the two knife edges 42 of the blade membersy 4I instead of along the four knife edges lof the three blade members employed in the construction illustrated in F18. 1.

Preferably the teeth I2 of the cutter bar Il are hollow ground or undercut on their lateral faces to provide a more emcient shearing action.

In order to dispense with the necessity of a central screw or otherv central retaining means to maintain the bar 8l in snug engagement with the stationary comb, said bar is formed of spring steel of concave curvature in longitudinal crosssection so that when the terminal screws are screwed home, the bar will be held in pressure engagement throughout with all of the fingers of the comb, the same as if a straight bar were employed and an additional central screw was provided to centrally secure the same to the central bar I6 4of the comb.

I n the modiilcation shown in Figs. 10 and 11, the recess in the housing which receives the shavmg head is enlarged to receive an enlarged comb 50 which is provided with a series of intermediate slots 5|, generally corresponding in width to the aforesaid slots I5 of the comb I3,

and also two series of enlarged terminal slots 52 which, while generally similar to the slots 5i are preferably of greater width, for example some twenty-five thousandths of an inch, in order to facilitate the entrance of long curly hairs thereinto. Adjacent, but not at the ends of the comb 50, are transverse reinforcing bars 53 and pref iii-ably the central portion of the comb is slotted in lieu of providing a reinforcing center bar, such as the bar i6 shown in Fig. 4, in order to partially compensate for the abbreviation of the central or shaving area of the comb as a result of the addition of the two series of enlarged terminal slots. Thesebars 53 also serve as anchorages for the screws 32 which secure the centralv blade 54 to the comb.

The cutter bar also is provided with three series of teeth, namely an intermediate series of teeth 56 adapted to freely oscillate in the slots 5l of the comb generally conforming in size to the teeth l2 and two series of terminal teeth 5l which are of greater width, being slightly narrower than the width of the wideterminal slots 52 of the comb 58 in which they are adapted to freely oscillate.

The terminal slots 52 of the comb 50, being preferably substantially wider than the intermediate slots 5I and being relatively long, because of being unobstructed by the central bladeY 5l, serve to facilitate the entrance of long soft curly hairs which otherwise might escape the shearing action of the cutter teeth. l

In operation, the plug 45 of the usual flexible cord 48 which supplies current to the motor, is plugged into the socket (not shown) of the housing or handle and the other end of the cord is plugged into the socket of an electric light fixture. The operation of the motor effects the rotation of the main shaft 2 which in turn imparts motion to the crank pin 4 and the latter, co-operating with the slot I in the blade holder 6, imparts an oscillating motion to'the blade holder upon which the cutter bar, as aforesaid, is rigidly mounted. The teeth or cutting elements Ii of the cutter bar oscillate in the slots l5 of the comb and, as illustrated in Figs. 6 and 7, the same project into said'slots so as to be flush with the outer surface of the lingers and thereby said cutting elements are enabled to intimately engage the knife edges of the cheek piece I8 and of the center bar 80. When the instrument is held so that the exposed guard rests on .the face of the user and then said razor is moved back and forth across the face in the manner customary in shaving with an electrical shaver, the hairs will project through the slots in the comb and be sheared oil flush with the skin upon the progressive or shearing engagement of each cutting element or tooth of the obliquely disposed cutter bar with the knife edges of the co-operating cheek piece and the opposing shearing edge of the center stationary cutter plate. In no case should the shearing areas of the cutter bar extend beyond the exposed outer surface of the guard member which engages the skin of the user during the shaving operation, as were the shearing areas to project the slight-est degree beyond the outer surface of the guard, the skin would become objectionably irritated, if not injured thereby during such shaving operation.

The shaving head in each of the various forms of razor construction herein illustrated is removably mountedy in the housing, being preferably securedI thereto by diagonally opposed screws x,

y but one of which is illustrated.

While I have illustrated a cutter .bar which is adapted to oscillate, I may employ a continuously rotating cutter member of the general type shown in Patent No. 1,247,828 granted Nov. 27, 1917, but having the blades thereof substituted by cutter bars of the type herein described wherein the shearing edges are discontinuous and adapted to travel in the slots of the guard, but in such event, the trailing edge or edges of the slot or slots in the shaving head are, of course, not required to be sharpened as they would not function as shearing edges.

In order to prevent the skin of the user from penetrating between the bars or fingers of the transversely slotted guard member during the shaving operation, such fingers are spaced approximately nineteen thousandths of an inch from each other, though this distance may be varied within reasonable limits, but it is desirable that these slots should be of the maximum width compatible with the protection of the skin against injury or irritation during the shaving operation in order to facilitate the entrance of hairs to be shorn into such slots through which the shearing elements of the cutter bar are oscillating.

r thereof, the combined shearing elementsconstistruction herein disclosed may be made without departing from the spiritof my invention as embraced within the scope of the appended claims.

Having thus described my invention, what I 'f claim and desire to obtain by United States Letters Patent is:

' 1. In an electrical razor, the combination com,- prising a shaving head, a movable cutter bar having a discontinuous shearing-edge rnounted thereinand adapted to move transversely of the tutinga discontinuous cutting edge andeach of such shearing elements being adapted to travel v in a different slot in saidguard. andthe outer surface of said shearing elements being adapted to extend longitudinally ush with the outer surl`r face of the slottedportion of said guard when the shearing elements of thel .a cutter bartravel through said slots inthe guard.

head, .a co-operatingvstationary blade member 'y having a longitudinal shearing edge also vcarried by said head, a protective apertured guard member, which guard member and cutter member 'l ,areV relatively movable with respect to eachother and the outer surface of which guardmember y is flush with the extreme outer surfaces of the f shearing areas of said cutter member and means for lmoving said cuttermernber. f s

2. In an electrical razor, the combination comprising a shaving head having alongitudinal slot whose margins constitute shearing edges, a transversely slotted stationary 'guardmember positionedin said slot, a movable cutter barfhavlng a discontinuous cutting edge mounted' in said rhead and adapted to periodically cross the re.-

speotive shearing edges of said slot, the cutting` areas of the edge of said cutter bar lying flush I with the outer surface of said guard and'means for effecting movement of saidjcutter bar.

3. Inan electrical razor, the combination comprising a slotted shaving head, the margins *of4` said slot constituting shearing edges, a movable cutter bar mounted in said head and adaptedk vto periodically cross the line of the respective shearingy edges of said slot and to co-operate therewith to effect the shearing of! of hairsenportions of said cutter bar being discontinuous v longitudinally thereof and being adapted to travel in the slots insaid guard and to extend outwardly so that the outer periphery of its path o f movement lies flush with the outermost surface of the slotted area of said guard. and a supplemental stationary cutter bar having opposing shearing edges mounted on said shaving head outside of. said guard and intermediate the aforesaid shearing edges of said slot.

4. In an electrical'razor, thesub-combinatlon comprising a stationary, transversely slotted guard member and a movable cutter bar having longitudinally discontinuous shearing elements, each of said shearingelements being adapted to travel in a different slot in said guard and the outermost surface'of each of the shearing elements of the cutter bar lying ush with the outer surface of the adjacent slotted portion Tof said guard when said cutter bar passes the shearing lineV of the said slot in the shaving head. K

5. In an electrical razor, the sub-combination comprising a stationary guard member having a plurality of parallel transverse slots therein and a movable cutter bar having a plurality of guardv member.

' -6. Inan electrical razor, the'sub-combination comprising 'a stationary, :arcuate guard member having aplurality of parallel transverse slotsv therein and a movable cutter bar having a .plurality of( shearing elements having shearing areas formed lon thev outer surfacethereof, the'combined shearing areas constituting a discontinuous lcutting edge and each of such shearing elements being ladapted'to travel in a? different slot in said guard, and theouter surface;y of said shearing elements` being adapted to lextendflongitudina'lly flush with the outer surface ofthe slotted portion of saidjguard when the shearing areas of the cutterbar travelthroughsaid slotsin the guard.

7. In an electrical'razor, the sub-combination comprising aA cutter bar having "separated shear- Y ing areas which constitute a discontinuous shearing edge and having grooves intermediate said cutting areas, a stationary guard memberhaving spaced, transversely extending bars, the said bars being adaptedto extend into the grooves insaid cutter bar during the movement' of said` cutter bar transversely ofsaid guard and the outermost surface of theV shearing edgesy of the cutterbar projecting flush with the. outer surface of thev transverse bars of the' guard member during vthe movement of the cutter bar transversely of the 8. In an electricalA razor, the sub-combination comprising a shaving head having a longitudinal terminal slot formed therein, the margins of said slot constituting knife edges, a'movable cutter bar longitudinally inclined with respect y,to said `knife edges, a slotted vguard member interposed Ain` said slot, saidkcutter bar having separated shearing elements v which constitute a discontinuous shearing edge and said shearing elements each passing through ,av different slot in said guard during the v movement of the cutter bar said guard during such movement.

shearing elements formed on the outer surface l vand said shearing elements extending flush with the outer surfaces vof the adjacentportions of 9. InA anelectrical razor, the sub-combination comprising a comb membery having a plurality of"transverse slotsrformed therein. atleast one i is of substantially greater width than the majority of the other slots, and a cutter bar having a plurality of teeth formed .therein which cooperate with and are adapted to respectively free- `ly oscillate while snugly fltting in the corresponding slots of said comb,'the majority of said teeth being of a length to project entirely through vthe* slots'of the comb so as to'be capable ofmovement' in a path whose outer ,periphery is flush with the youter surface off said comb, wherebythe shearing edges of theteeth and the laterally adjacent portions of the comb will have flush con,- tact with theskin during a shaving operation.l

JAMES .DoBsoN amamos. 

